品質工学
Online ISSN : 2189-9320
Print ISSN : 2189-633X
ISSN-L : 2189-633X
事例研究
新しい視点によるジェットエンジンの軸振動設計
本田 達人高松 喜久雄近藤 洋介中邨 康弘
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2011 年 19 巻 6 号 p. 40-47

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Shaft vibration in jet engines has a direct operational cost and also impairs riding comfort with noise etc., making it a primary factor in lowering the level of customer satisfaction. From a safety standpoint, excessive vibration also accelerates fatigue damage to structures and can lead to serious accidents. Rotors have conventionally been designed so that their critical damage speed stays clear of their operational rotation speed area, leaving a certain margin to allow for the effects of variation. However, if vibration is viewed as energy, shaft vibration can be considered as a phenomenon in which a jet engine system loses energy in the form of vibration and the accompanying sound and heat. Suppressing this energy loss, with consideration given to variation, could be expected to improve total system efficiency. In this study, a shaft vibration design from the new viewpoint of minimizing energy loss was attempted. Using Taguchi methods, a design aiming at a system in which energy loss is minimized in the presence of variation was performed and the result obtained was compared with a design performed from the conventional viewpoint.

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© 2011 一般社団法人 品質工学会
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